My worst case stuck-song was about a rubber ducky in the bathtub. "Rubber ducky, you're the one..."
Was working construction and heard that tune all day long.
Can't stand ducks to this day.
Rubber ducky, you're the one,
You make bathtime lots of fun.
Rubby ducky, I'm awfully fond of you...
Doo-doo-dee-doo
That one? ;-)